Answer this question truthfully
### Question: What are the symptoms of Acanthosis nigricans?
### Response: Acanthosis nigricans usually appears slowly and doesn't cause any symptoms other than skin changes.
Eventually, dark, velvety skin with very visible markings and creases appears in the armpits, groin and neck folds, and over the joints of the fingers and toes.
Less commonly, the lips, palms, soles of the feet, or other areas may be affected. These symptoms are more common in people with cancer.